Delta.com search for a first class round-trip SLC-YYZ ticket for departure on 2/14 and return on 2/19 yields a fare of $5,094.90.

Seating chart shows 3 of 9 first class sears available on outbound and 8 of 9 on return. Sure is nice of Delta Revenue Management to preserve upgrade availability at gate by charging such extortionate and unjustifiable fares,